Correct repair method of electric heating wire in electric soldering iron
The common fault of electric soldering iron is that the heating wire is broken.
1. The simplest repair method: Splicing the fracture.
Disadvantages: Sparks often appear due to loose contacts after connection, and the contacts break after a short time.
Second, fast and reliable repair method:
Take the heating wire out of the barrel, first remove the oxide near the fracture, and then splice it tightly. After splicing, sprinkle a little mixed powder of glass and electric porcelain around the joint (the two are ground at a ratio of 6:1) , After being installed, power on for a few minutes, and the powder will melt and adhere to the contacts.
Repair according to the above method, the contact will not spark, and it is also more durable.
Basic steps of welding
1. In order to make the solder joints have good conductivity, first polish the tip of the soldering iron with sandpaper. Be careful not to wear the tip of the soldering iron excessively. Excessive wear is easy to be oxidized.
2. Turn on the electric soldering iron and heat it. When the temperature can melt the solder, apply flux to the tip of the soldering iron, and then apply the solder evenly on the tip of the soldering iron.
3. Touch the solder joint with the tip of the soldering iron. When the solder is immersed in the solder joint, slowly pull up the soldering iron.
4. After the soldering is completed, turn off the electric soldering iron and put it on the soldering iron stand. Be careful not to be burned by residual heat.
5. The residual flux on the circuit board can be cleaned with alcohol to prevent the carbonized flux from affecting the normal operation of the circuit.
